Question

look at this set of ordered pairs:
(-13, 5)
(6, 18)
(19, 5)
(-3, 10)
(2, 13)
is this relation a function?
yes
no

Explanation:

Step1: Recall function definition

A relation is a function if each input (x - value) has exactly one output (y - value). So we check if any x - value is repeated.

Step2: List x - values

The x - values of the ordered pairs are: - 13, 6, 19, - 3, 2.

Step3: Check for repeats

None of these x - values are repeated. Each x - value is associated with only one y - value.

Answer:

yes